What role does Ferritin Eisenmangel play in Abnehmen?

Ferritin is a storage protein for iron; low ferritin (iron deficiency) can indirectly affect weight loss. Iron deficiency often causes fatigue, reduced physical performance, and a lower basal metabolic rate, which can hinder weight loss. There is also mechanistic evidence that iron deficiency impairs fat metabolism and mitochondrial function. However, iron deficiency is not a weight loss aid – supplementing without deficiency provides no benefit and may be harmful in excess. Importantly, ferritin can be falsely elevated during inflammation, so results need clinical context. MyBody-X offers blood tests for ferritin that measure current status – DNA tests are not suitable for this. The evidence for a direct causal role of iron deficiency in weight loss is weak; it is more of an indirect, mechanistic link. If you suspect iron deficiency and struggle with weight, consult a doctor for proper evaluation.